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llvm-project/clang/test/OpenMP/declare_target_codegen.cpp
Joseph Huber 3c6d32ec6c [OpenMP] Make Ctor / Dtor functions have external visibility 
The default construction of constructor functions by LLVM tends to make
them have internal linkage. When we call a ctor / dtor function in the
target region we are actually creating a kernel that is called at
registration. Because the ctor is a kernel we need to make sure it's
externally visible so we can actually call it. This prevented AMDGPU
from correctly using constructors while NVPTX could use them simply
because it ignored internal visibility.

Reviewed By: JonChesterfield

Differential Revision: https://reviews.llvm.org/D122504
2022-03-25 22:44:17 -04:00

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// RUN: %clang_cc1 -verify -fopenmp -fopenmp-version=45 -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm-bc %s -o %t-ppc-host.bc -DLOAD
// RUN: %clang_cc1 -verify -fopenmp -fopenmp-version=45 -x c++ -triple powerpc64le-unknown-unknown -emit-llvm %s -fopenmp-is-device -fvisibility protected -fopenmp-host-ir-file-path %t-ppc-host.bc -o - -DLOAD | FileCheck %s
// RUN: %clang_cc1 -verify -fopenmp -fopenmp-version=45 -x c++ -triple powerpc64le-unknown-unknown -emit-llvm %s -fopenmp-is-device -fvisibility protected -fopenmp-host-ir-file-path %t-ppc-host.bc -emit-pch -o %t
// RUN: %clang_cc1 -verify -fopenmp -fopenmp-version=45 -x c++ -triple powerpc64le-unknown-unknown -emit-llvm %s -fopenmp-is-device -fvisibility protected -fopenmp-host-ir-file-path %t-ppc-host.bc -include-pch %t -o - -DLOAD | FileCheck %s
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm %s -o - -DOMP5 | FileCheck %s --check-prefix HOST5
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm-bc %s -o %t-ppc-host.bc -DOMP5
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -emit-llvm %s -fopenmp-is-device -fvisibility protected -fopenmp-host-ir-file-path %t-ppc-host.bc -o - -DOMP5 | FileCheck %s --check-prefix DEV5
// RUN: %clang_cc1 -verify -fopenmp -x c++ -triple powerpc64le-unknown-unknown -emit-llvm %s -o - -DOMP5 | FileCheck %s --check-prefix KMPC-ONLY
// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm %s -o - -DOMP5 | FileCheck %s --check-prefix SIMD-ONLY
// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm-bc %s -o %t-ppc-host.bc -DOMP5
// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -triple powerpc64le-unknown-unknown -emit-llvm %s -fopenmp-is-device -fvisibility protected -fopenmp-host-ir-file-path %t-ppc-host.bc -o - -DOMP5 | FileCheck %s --check-prefix SIMD-ONLY
// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -triple powerpc64le-unknown-unknown -fopenmp-targets=powerpc64le-ibm-linux-gnu -emit-llvm-bc %s -o %t-ppc-host.bc -fopenmp-version=45
// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -triple powerpc64le-unknown-unknown -emit-llvm %s -fopenmp-is-device -fvisibility protected -fopenmp-host-ir-file-path %t-ppc-host.bc -o - -fopenmp-version=45 | FileCheck %s --check-prefix SIMD-ONLY
// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -triple powerpc64le-unknown-unknown -emit-llvm %s -fopenmp-is-device -fvisibility protected -fopenmp-host-ir-file-path %t-ppc-host.bc -emit-pch -o %t -fopenmp-version=45
// RUN: %clang_cc1 -verify -fopenmp-simd -x c++ -triple powerpc64le-unknown-unknown -emit-llvm %s -fopenmp-is-device -fvisibility protected -fopenmp-host-ir-file-path %t-ppc-host.bc -include-pch %t -verify -o - -fopenmp-version=45 | FileCheck %s --check-prefix SIMD-ONLY
// expected-no-diagnostics
// SIMD-ONLY-NOT: {{__kmpc|__tgt}}
// KMPC-ONLY-NOT: __tgt
// CHECK-NOT: define {{.*}}{{baz1|baz4|maini1|Base|virtual_}}
// CHECK-DAG: Bake
// CHECK-NOT: @{{hhh|ggg|fff|eee}} =
// CHECK-DAG: @flag = protected global i8 undef,
// CHECK-DAG: @aaa = external global i32,
// CHECK-DAG: @bbb ={{ protected | }}global i32 0,
// CHECK-DAG: weak constant %struct.__tgt_offload_entry { i8* bitcast (i32* @bbb to i8*),
// CHECK-DAG: @ccc = external global i32,
// CHECK-DAG: @ddd ={{ protected | }}global i32 0,
// CHECK-DAG: @hhh_decl_tgt_ref_ptr = weak global i32* null
// CHECK-DAG: @ggg_decl_tgt_ref_ptr = weak global i32* null
// CHECK-DAG: @fff_decl_tgt_ref_ptr = weak global i32* null
// CHECK-DAG: @eee_decl_tgt_ref_ptr = weak global i32* null
// CHECK-DAG: @{{.*}}maini1{{.*}}aaa = internal global i64 23,
// CHECK-DAG: @pair = {{.*}}addrspace(3) global %struct.PAIR undef
// CHECK-DAG: @_ZN2SS3SSSE ={{ protected | }}global i32 1,
// CHECK-DAG: @b ={{ protected | }}global i32 15,
// CHECK-DAG: @d ={{ protected | }}global i32 0,
// CHECK-DAG: @c = external global i32,
// CHECK-DAG: @globals ={{ protected | }}global %struct.S zeroinitializer,
// CHECK-DAG: [[STAT:@.+stat]] = internal global %struct.S zeroinitializer,
// CHECK-DAG: [[STAT_REF:@.+]] = internal constant %struct.S* [[STAT]]
// CHECK-DAG: @out_decl_target ={{ protected | }}global i32 0,
// CHECK-DAG: @llvm.compiler.used = appending global [1 x i8*] [i8* bitcast (%struct.S** [[STAT_REF]] to i8*)],
// CHECK-DAG: define {{.*}}i32 @{{.*}}{{foo|bar|baz2|baz3|FA|f_method}}{{.*}}()
// CHECK-DAG: define {{.*}}void @{{.*}}TemplateClass{{.*}}(%class.TemplateClass* {{[^,]*}} %{{.*}})
// CHECK-DAG: define {{.*}}i32 @{{.*}}TemplateClass{{.*}}f_method{{.*}}(%class.TemplateClass* {{[^,]*}} %{{.*}})
// CHECK-DAG: define {{.*}}void @__omp_offloading__{{.*}}_globals_l[[@LINE+78]]_ctor()
#ifndef HEADER
#define HEADER
#pragma omp declare target
bool flag [[clang::loader_uninitialized]];
extern int bbb;
#pragma omp end declare target
#pragma omp declare target
extern int bbb;
#pragma omp end declare target
#pragma omp declare target
extern int aaa;
int bbb = 0;
extern int ccc;
int ddd = 0;
#pragma omp end declare target
#pragma omp declare target
extern int bbb;
#pragma omp end declare target
extern int eee;
int fff = 0;
extern int ggg;
int hhh = 0;
#pragma omp declare target link(eee, fff, ggg, hhh)
int out_decl_target = 0;
#ifdef OMP5
#pragma omp declare target(out_decl_target)
#endif
#pragma omp declare target
void lambda () {
#ifdef __cpp_lambdas
(void)[&] { (void)out_decl_target; };
#else
#pragma clang __debug captured
{
(void)out_decl_target;
}
#endif
};
#pragma omp end declare target
template <typename T>
class TemplateClass {
T a;
public:
TemplateClass() {}
T f_method() const { return a; }
};
int foo();
static int baz1() { return 0; }
int baz2();
int baz4() { return 5; }
template <typename T>
T FA() {
TemplateClass<T> s;
return s.f_method();
}
#pragma omp declare target
struct S {
int a;
S(int a) : a(a) {}
};
int foo() { return 0; }
int b = 15;
int d;
S globals(d);
static S stat(d);
#pragma omp end declare target
int c;
int bar() { return 1 + foo() + bar() + baz1() + baz2(); }
int maini1() {
int a;
static long aa = 32 + bbb + ccc + fff + ggg;
// CHECK-DAG: define weak_odr void @__omp_offloading_{{.*}}maini1{{.*}}_l[[@LINE+1]](i32* noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) %{{.*}}, i64 {{.*}}, i64 {{.*}})
#pragma omp target map(tofrom \
: a, b)
{
S s(a);
static long aaa = 23;
a = foo() + bar() + b + c + d + aa + aaa + FA<int>();
}
return baz4();
}
int baz3() { return 2 + baz2(); }
int baz2() {
// CHECK-DAG: define weak_odr void @__omp_offloading_{{.*}}baz2{{.*}}_l[[@LINE+1]](i64 {{.*}})
#pragma omp target parallel
++c;
return 2 + baz3();
}
extern int create() throw();
static __typeof(create) __t_create __attribute__((__weakref__("__create")));
int baz5() {
bool a;
// CHECK-DAG: define weak_odr void @__omp_offloading_{{.*}}baz5{{.*}}_l[[@LINE+1]](i64 {{.*}})
#pragma omp target
a = __extension__(void *) & __t_create != 0;
return a;
}
template <typename T>
struct Base {
virtual ~Base() {}
};
template class Base<int>;
template <typename T>
struct Bake {
virtual ~Bake() {}
};
#pragma omp declare target
template class Bake<int>;
#pragma omp end declare target
struct BaseNonT {
virtual ~BaseNonT() {}
};
#pragma omp declare target
struct BakeNonT {
virtual ~BakeNonT() {}
};
#pragma omp end declare target
template <typename T>
struct B {
virtual void virtual_foo();
};
void new_bar() { new B<int>(); }
template <typename T>
void B<T>::virtual_foo() {
#pragma omp target
{}
}
struct A {
virtual void emitted() {}
};
template <typename T>
struct C : public A {
virtual void emitted();
};
template <typename T>
void C<T>::emitted() {
#pragma omp target
{}
}
int main() {
A *X = new C<int>();
X->emitted();
return 0;
}
// CHECK-DAG: define {{.*}}void @__omp_offloading_{{.*}}virtual_foo{{.*}}_l[[@LINE-25]]()
// CHECK-DAG: define {{.*}}void @__omp_offloading_{{.*}}emitted{{.*}}_l[[@LINE-11]]()
template <typename T>
struct TTT {
virtual void emitted() {
#pragma omp target
{}
}
};
// CHECK-DAG: define {{.*}}void @__omp_offloading_{{.*}}emitted{{.*}}_l[[@LINE-5]]()
// CHECK-DAG: declare extern_weak noundef signext i32 @__create()
// CHECK-NOT: define {{.*}}{{baz1|baz4|maini1|Base|virtual_}}
// CHECK-DAG: !{i32 1, !"aaa", i32 0, i32 {{[0-9]+}}}
// CHECK-DAG: !{i32 1, !"ccc", i32 0, i32 {{[0-9]+}}}
// CHECK-DAG: !{{{.+}}virtual_foo
#ifdef OMP5
void host_fun() {}
#pragma omp declare target to(host_fun) device_type(host)
void device_fun() {}
#pragma omp declare target to(device_fun) device_type(nohost)
// HOST5-NOT: define {{.*}}void {{.*}}device_fun{{.*}}
// HOST5: define {{.*}}void {{.*}}host_fun{{.*}}
// HOST5-NOT: define {{.*}}void {{.*}}device_fun{{.*}}
// DEV5-NOT: define {{.*}}void {{.*}}host_fun{{.*}}
// DEV5: define {{.*}}void {{.*}}device_fun{{.*}}
// DEV5-NOT: define {{.*}}void {{.*}}host_fun{{.*}}
#endif // OMP5
struct PAIR {
int a;
int b;
};
#pragma omp declare target
PAIR pair __attribute__((address_space(3), loader_uninitialized));
#pragma omp end declare target
#endif // HEADER
#ifdef LOAD
#pragma omp declare target
void new_bar1() {
TTT<int> *X = new TTT<int>();
X->emitted();
}
#pragma omp end declare target
struct SS {
#pragma omp declare target
static int SSS;
#pragma omp end declare target
};
int SS::SSS = 1;
#endif
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